<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>helloworld</title>
	</head>
	<body>
		<script type="text/javascript">
			/* ctrl+shift+/ 注释快捷键 script标签用于放js代码 */
			alert("Hello World");
		</script>
	</body>
</html>
